Evolution of the sink and source of dissolved inorganic nitrogen with salinity as a tracer during summer in the Pearl River Estuary.
Evolution of the sink and source of dissolved inorganic nitrogen with salinity as a tracer during summer in the Pearl River Estuary.
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以盐度为示踪的珠江口夏季溶解性无机氮汇源演变
DOI：
10.1038/srep36638
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发表时间：
2016-11-11
影响因子：
4.6
通讯作者：
Wang YS
中科院分区：
文献类型：
--
作者：
Wu ML;Hong YG;Yin JP;Dong JD;Wang YS
在这项研究中，我们评估了沿着PRE的地表水的汇和源的混合模型方法与盐度作为示踪剂。观测数据表明，溶解无机氮（DIN）的减少并不密切遵循淡水和改性海水的物理混合线。在西部，浮游植物和细菌吸收DIN的消耗量（ΔDIN）在15.81 μmol L− 1到88.53 μmol L−1之间。相反，在东部，ΔDIN变化范围为−63.66 μmol L− 1至−10.45 μmol L−1。东部海域DIN的来源可能主要是有机质的分解，而DIN的去除则与浮游植物的生长和细菌的消耗密切相关。这些不同的行为河口相对于DIN在很大程度上是由于不同程度的水动力，由于在这两个地区不同的地形。敏感性分析表明，减少DIN输入到沿海沃茨的战略可能会改善环境质量在PRE，由于DIN的变化，在淡水端元具有确定的影响生物活性（R）。研究结果表明，该模型可能是一个有价值的方式来解决在河流为主的河口DIN的源和汇。
In this study, we evaluated the sink and source of the surface water along the PRE using a mixing model method with salinity as tracer. The observational data showed that the decreasing of dissolved inorganic nitrogen (DIN) did not closely follow the physical mixing lines of freshwater and modified seawater. In the western part, DIN consumption by phytoplankton and bacteria uptake (ΔDIN)varied from 15.81 μmol L−1to 88.53 μmol L−1. On the contrary, in the eastern part, ΔDIN varied from −63.66 μmol L−1to −10.45 μmol L−1. DIN source in the eastern part may be mainly caused by organic matter decomposition, while DIN remove is strongly associated with phytoplankton growth and bacteria consumption. These differential behaviors of the estuary with respect to DIN are largely due to varying degrees of hydrodynamics due to different topography in the two areas. Sensitivity analysis indicated reduction strategies of DIN inputs to coastal waters may improve environment quality in the PRE, due to DIN changes in the freshwater end-member having a determined influence on biological activities (R). Our results indicate that the model may be a valuable way to address the sources and sink of DIN in the river-dominated estuaries.
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影响因子：
2.8
作者：
ANDERSON, GF
通讯作者：
ANDERSON, GF
开发基于盐度的方法来评估河口生态系统中的 DIN 去除率
影响因子：
2.7
作者：
Hong, Yiguo;Wang, Shuailong;Wang, Youshao
通讯作者：
Wang, Youshao
影响因子：
4
作者：
Howarth, RW;Billen, G;Zhu, ZL
通讯作者：
Zhu, ZL
DOI：
10.1007/bf02711991
发表时间：
2003-06-01
期刊：
ESTUARIES
影响因子：
--
作者：
Castro, MS;Driscoll, CT;Boynton, WR
通讯作者：
Boynton, WR
DOI：
10.1007/1-4020-3655-8_9
发表时间：
2006-01-01
期刊：
ENVIRONMENT IN ASIA PACIFIC HARBOURS
影响因子：
--
作者：
Dong, Lixian;Su, Jilan;Guan, Weibing
通讯作者：
Guan, Weibing